ES2097942T3 - VALVE CONTROL SYSTEM FOR AN INTERNAL COMBUSTION ENGINE WITH VARIABLE ADJUSTMENT, PARTICULARLY FOR AN ENGINE WITH SEVERAL VALVES PER CYLINDER. - Google Patents

VALVE CONTROL SYSTEM FOR AN INTERNAL COMBUSTION ENGINE WITH VARIABLE ADJUSTMENT, PARTICULARLY FOR AN ENGINE WITH SEVERAL VALVES PER CYLINDER.

Info

Publication number
ES2097942T3
ES2097942T3 ES93108213T ES93108213T ES2097942T3 ES 2097942 T3 ES2097942 T3 ES 2097942T3 ES 93108213 T ES93108213 T ES 93108213T ES 93108213 T ES93108213 T ES 93108213T ES 2097942 T3 ES2097942 T3 ES 2097942T3
Authority
ES
Spain
Prior art keywords
engine
internal combustion
control system
cam
combustion engine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
ES93108213T
Other languages
Spanish (es)
Inventor
Paolo Martinelli
Giuseppe Molinari
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ferrari SpA
Original Assignee
Ferrari SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ferrari SpA filed Critical Ferrari SpA
Application granted granted Critical
Publication of ES2097942T3 publication Critical patent/ES2097942T3/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
    • F01L13/0042—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction with cams being profiled in axial and radial direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/26—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
    • F02F1/4214—Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F2001/244—Arrangement of valve stems in cylinder heads
    • F02F2001/245—Arrangement of valve stems in cylinder heads the valve stems being orientated at an angle with the cylinder axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F2001/244—Arrangement of valve stems in cylinder heads
    • F02F2001/247—Arrangement of valve stems in cylinder heads the valve stems being orientated in parallel with the cylinder axis

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

UN SISTEMA DE CONTROL (1) PARA VALVULAS (2) PARA UN MOTOR DE COMBUSTION INTERNA DE PUESTA A TIEMPO VARIABLE, EN PARTICULAR PARA UN MOTOR CON VARIAS VALVULAS (2) POR CILINDRO (6), DEL TIPO EN QUE UN ARBOL DE LEVAS (3) LLEVA POR LO MENOS UNA LEVA (4) QUE TIENE UN PERFIL QUE VARIA A LO LARGO DEL EJE DEL EJ Y UN DISPOSITIVO DE CONTROL (5) INTERPUESTO ENTRE LA LEVA (4) Y POR LO MENOS UNA VALVULA DE SERVICIO (2) DE UN CILINDRO (6); EL DISPOSITIVO DE CONTROL (5) ESTA FORMADO POR UN SEGUIDOR DE LEVA (14) QUE COOPERA CON UNA SUPERFICIE PERIFERICA (15) DE LA LEVA (4) Y UN BALANCIN CON FORMA SUSTANCIALMENTE DE T (18) QUE INCLUYE UNA PORCION CENTRAL (21) QUE TIENE UNA SILLETA DE SOPORTE (16) PARA EL SEGUIDOR DE LEVA (16) EN SU SUPERFICIE SUPERIOR Y DEBAJO DE ELLA UN ASIENTO (22) PARA FIJARLO A UN FULCRO (25) PARA EL BALANCIN (18) LLEVADO POR UNA CABEZA (11) DEL MOTOR Y UN PAR DE BRAZOS LATERALES (31) QUE SE APOYAN CONTRA LOS VASTAGOS (34) DE UNAS VALVULAS HOMOLOGAS RESPECTIVAS (2) DEL CILINDRO (6).A CONTROL SYSTEM (1) FOR VALVES (2) FOR AN INTERNAL COMBUSTION ENGINE WITH VARIABLE TIMING, IN PARTICULAR FOR AN ENGINE WITH SEVERAL VALVES (2) PER CYLINDER (6), OF THE TYPE IN WHICH A CAMSHAFT ( 3) IT HAS AT LEAST ONE CAM (4) THAT HAS A PROFILE THAT VARY ALONG THE AXIS OF THE AXIS AND A CONTROL DEVICE (5) INTERPOSED BETWEEN THE CAM (4) AND AT LEAST ONE SERVICE VALVE (2) OF A CYLINDER (6); THE CONTROL DEVICE (5) IS FORMED BY A CAM FOLLOWER (14) THAT COOPERATES WITH A PERIPHERAL SURFACE (15) OF THE CAM (4) AND A ROCKER WITH A SUBSTANTIALLY T (18) SHAPE THAT INCLUDES A CENTRAL PORTION (21 ) WHICH HAS A SUPPORT SADDLE (16) FOR THE CAM FOLLOWER (16) IN ITS UPPER SURFACE AND BELOW IT A SEAT (22) TO FIX IT TO A FULCRO (25) FOR THE ROCKER (18) CARRIED BY A HEAD ( 11) OF THE ENGINE AND A PAIR OF SIDE ARMS (31) THAT SUPPORT AGAINST THE STEMS (34) OF SOME RESPECTIVE APPROVAL VALVES (2) OF THE CYLINDER (6).

ES93108213T 1992-05-22 1993-05-19 VALVE CONTROL SYSTEM FOR AN INTERNAL COMBUSTION ENGINE WITH VARIABLE ADJUSTMENT, PARTICULARLY FOR AN ENGINE WITH SEVERAL VALVES PER CYLINDER. Expired - Lifetime ES2097942T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTO920440A IT1257540B (en) 1992-05-22 1992-05-22 VALVE CONTROL SYSTEM FOR A VARIABLE ENDOTHERMAL ENGINE, IN PARTICULAR AN ENGINE WITH MORE VALVES PER CYLINDER.

Publications (1)

Publication Number Publication Date
ES2097942T3 true ES2097942T3 (en) 1997-04-16

Family

ID=11410481

Family Applications (1)

Application Number Title Priority Date Filing Date
ES93108213T Expired - Lifetime ES2097942T3 (en) 1992-05-22 1993-05-19 VALVE CONTROL SYSTEM FOR AN INTERNAL COMBUSTION ENGINE WITH VARIABLE ADJUSTMENT, PARTICULARLY FOR AN ENGINE WITH SEVERAL VALVES PER CYLINDER.

Country Status (4)

Country Link
EP (1) EP0570963B1 (en)
DE (1) DE69308373T2 (en)
ES (1) ES2097942T3 (en)
IT (1) IT1257540B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1270443B (en) * 1993-02-10 1997-05-05 Fiat Auto Spa VARIABLE GEOMETRY DISTRIBUTION CONTROL FOR AN INTERNAL COMBUSTION ENGINE.
DE9405442U1 (en) * 1994-03-31 1995-08-03 Fev Motorentech Gmbh & Co Kg 4-valve piston internal combustion engine
EP0867601B1 (en) * 1997-03-27 2003-01-22 Toyota Jidosha Kabushiki Kaisha Valve driving apparatus for engine
DE102006047293A1 (en) * 2006-10-06 2008-04-10 Schaeffler Kg Valve drive for an internal combustion engine with displaceable space cam
DE102006058093A1 (en) * 2006-12-09 2008-06-12 Schaeffler Kg valve train

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2179700B (en) * 1985-08-29 1989-08-09 Nissan Motor Rocker arm arrangement for multi-valve internal combustion engine
IT1195192B (en) * 1986-10-07 1988-10-12 Fiat Auto Spa VALVE CONTROL FOR CAMSHAFT ENGINES IN HEAD

Also Published As

Publication number Publication date
EP0570963A1 (en) 1993-11-24
IT1257540B (en) 1996-01-30
ITTO920440A0 (en) 1992-05-22
ITTO920440A1 (en) 1993-11-22
EP0570963B1 (en) 1997-03-05
DE69308373T2 (en) 1997-06-26
DE69308373D1 (en) 1997-04-10

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